Sunday, September 14, 2008
Classless Routing Behavior
At times the router might receive packets destined for a subnet of a network that has no network default route. shows the router in network 128.20.0.0 connected to subnets 128.20.1.0, 128.20.2.0, and 128.20.3.0. Suppose the host sends a packet to 120.20.4.1. By default, if the router receives a packet destined for a subnet it does not recognize, and there is no network default route, the router discards the packet.
In , classless routing is enabled in the router. Therefore, when the host sends a packet to 120.20.4.1, instead of discarding the packet, the router forwards the packet to the best supernet route.
# posted by Paris Heng NETwork : 4:06 AM
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